The lug nuts for the Massey-Ferguson 35 front tires have a lug nut size of 1/2 inch x 20 threads per inch. The lug nuts are designed to fit 11/16 inch wheel studs, so it is important to make sure that the wheel studs match up with the lug nut size. The lug nuts have a 60 degree tapered seat, which means that only a conical or tapered seating wheel nut should be used.